Why can't my vagina have the same smell all day, like I can never have a normal odor that lasts all day. What's wrong with me? Bad Hygiene?

Vaginal odor. Some changes in the vaginal odor are expected. Just like your armpits and bottom this area of your body will sweat and have a change throughout the day. On the other hand there are certain infections that can cause malodorous discharge. Bacterial vaginosis and trichomoniasis are two common ones. Testing can be done to determine if you have this and treatment can be given.